client.close(function(err) { if (err) { console.error('Failed to close MongoDB connection:', err); return; } console.log('MongoDB connection closed'); }); 通过以上步骤,可以确保在使用Node.js上的MongoDB驱动时,MongoClient的连接被正确关闭,避免资源泄漏和性能问题。
MongoClient被设计成线程安全、可以被多线程共享的。通常访问数据库集群的应用只需要一个实例,所以这次调整我们设计成单例形式。如果出于某些原因,你决定使用多个实例,请注意:所有资源使用限制(最大连接数等等)对每个MongoClient都适用;销毁一个实例时,请确认调用MongoClient.close()方法来清理资源。 设置配置信息 //连...
6. close(:关闭与MongoDB数据库的连接。 以下是一个使用MongoClient的示例代码: ```java public class MongoDBExample public static void main(String[] args) // 使用MongoClientURI连接字符串初始化MongoClient MongoClientURI uri = new MongoClientURI(connectionString); MongoClient mongoClient = new Mongo...
importcom.mongodb.MongoClient;importcom.mongodb.MongoClientURI;publicclassMongoDbConnection{publicstaticvoidmain(String[]args){// 创建 MongoClientURI 对象,包含连接字符串Stringuri="mongodb://myUser:myPassword@localhost:27017/myDatabase";MongoClientURIclientURI=newMongoClientURI(uri);// 创建 MongoClie...
public bool close ([ boolean|string $connection ] )public bool connect ( void )public array dropDB ( mixed $db )public MongoDB __get ( string $dbname )public static array getConnections ( void )public array getHosts ( void )public array getReadPreference ( void )public...
it.skip('the new monitor interval timer is cleaned up by client.close()', async () => {}); }); }); }); describe('Connection Monitoring', () => { describe('Node.js resource: Socket', () => { it.skip('no sockets remain after client.close()', metadata, async function () ...
= MongoClients.create(uri); // 获取数据库 MongoDatabase database = mongoClient.getDatabase("mydatabase"); // 测试连接 System.out.println("Connected to database: " + database.getName()); // 关闭 MongoClient 连接(在实际应用中,请确保在不需要时关闭连接) // mongoClient.close(); } } ...
/** * Set whether to wait for scheduled tasks to complete on shutdown, * not interrupting ...
constmongodb =require('mongodb')constMongoClient= mongodb.MongoClientconstconnectionURL ='connectionurl'constdatabaseName ='db'constclient =newMongoClient(connectionURL, {useNewUrlParser:true,useUnifiedTopology:true});constinsertHandler=async(data, collectionName) => {awaitclient.connect().t...
ClientSettings对象并配置连接信息MongoClientSettingssettings=MongoClientSettings.builder().applyConnectionString(connectionString).build();// 使用MongoClientSettings对象创建MongoClient对象MongoClientclient=MongoClients.create(settings);// 使用MongoClient对象进行数据库操作// ...// 关闭MongoClient连接client.close...